Branchiostegal Lung
Get Branchiostegal Lung essential facts below. View Videos or join the Branchiostegal Lung discussion. Add Branchiostegal Lung to your topic list for future reference or share this resource on social media.
Branchiostegal Lung

A branchiostegal lung is a respiration organ used by some air-breathing arthropods. It is one of the most significant adaptations of some crabs[1] and hermit crabs such as the coconut crab to their terrestrial habitats.

The branchiostegal (gill) tissue is supported by folds or other mechanisms to increase surface area and are of a similar tissue to that normally found in gills. In this case, the lung is more suited to the absorption of oxygen from air, rather than water.

Instead of branchiostegal lungs, some terrestrial hermit crabs (Coenobita and Birgus) possess multiple gills and small lungs, with other varieties of gas diffusion methods supporting the transition from aquatic to terrestrial dwelling.

The developmental shift from water diffusion "gills" to air perfusion "lungs" may have been related to the need for reduced rates of water loss in air.


  1. ^ Halperin J, Ansaldo M, Pellerano GN, Luquet CM (2000). "Bimodal breathing in the estuarine crab Chasmagnathus granulatus Dana 1851 -- physiological and morphological studies". Comparative Biochemistry and Physiology - Part A: Molecular & Integrative Physiology. 126 (3): 341-349. doi:10.1016/S1095-6433(00)00216-6. PMID 10964029.

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



Music Scenes